Electricity in the home End of Topic Quiz

An oscilloscope shows the current flow above what type of current is it showing?

• DC

• AC

• Rectified Current

• Non rectified current

Tags

NGSS.HS-PS4-1

• DC

• AC

• rectified current

• non rectified current

Tags

NGSS.HS-PS2-5

Diagram shows the trace displayed on the screen of a C.R.O. with the time-base set to 10 ms/div. What is the frequency, f of the wave?

• 5 Hz

• 25 Hz

• 40 Hz

• 50 Hz

Diagram shows a waveform displayed on the screen of a C.R.O. If the controls on the C.R.O. are set at 0.5 V/div and 2 ms/div, find the peak voltage and the frequency of the input signal.

• 4 V, 2 Hz

• 5 V, 10 Hz

• 2 V, 100 Hz

• 4 V, 100 Hz

Tags

NGSS.HS-PS4-1

What is the name given to the blue wire?

• Neutral Wire

• Earth Wire

• Live Wire

What colour is the live wire in a mains plug?

• Green
• Blue
• Brown

The fuse used in an electric appliance should be rated __________ than the operating current.

• higher

• lower

TV is 240V and 800W. What is the suitable fuse rating for the TV?

• 1 A

• 2 A

• 3 A

• 5 A

Electric current is measured in

• kWh

• Amps

• Ohms

• Watts

Electric power is measured in

• kWh

• Amps

• Ohms

• Watts